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authorEmil Tantilov <emil.s.tantilov@intel.com>2014-11-08 01:39:56 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2014-11-20 14:48:24 -0800
commit688ff32db2f7e7074df4eb6871afa65dee41c98f (patch)
treeef46a0b1c96d6009891f7226054875d574b7b178 /drivers/net/ethernet/intel/ixgbevf
parent6622402a72580afee68e961e37020894dedbecb6 (diff)
downloadlinux-linaro-stable-688ff32db2f7e7074df4eb6871afa65dee41c98f.tar.gz
ixgbevf: add netpoll support
This patch adds ixgbevf_netpoll() a callback for .ndo_poll_controller to allow for the VF interface to be used with netconsole. CC: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf')
-rw-r--r--drivers/net/ethernet/intel/ixgbevf/ixgbevf.h2
-rw-r--r--drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c29
2 files changed, 24 insertions, 7 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index 666049849d3f..bb6726cbeb86 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -379,7 +379,7 @@ struct ixgbevf_adapter {
*/
u32 flags;
#define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1)
-#define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 1)
+
#define IXGBEVF_FLAG_QUEUE_RESET_REQUESTED (u32)(1 << 2)
struct msix_entry *msix_entries;
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 70a2b8fe40ba..755f71f07ae1 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -344,10 +344,8 @@ static void ixgbevf_rx_skb(struct ixgbevf_q_vector *q_vector,
return;
}
#endif /* CONFIG_NET_RX_BUSY_POLL */
- if (!(q_vector->adapter->flags & IXGBE_FLAG_IN_NETPOLL))
- napi_gro_receive(&q_vector->napi, skb);
- else
- netif_rx(skb);
+
+ napi_gro_receive(&q_vector->napi, skb);
}
/* ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
@@ -919,12 +917,10 @@ static int ixgbevf_poll(struct napi_struct *napi, int budget)
else
per_ring_budget = budget;
- adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
ixgbevf_for_each_ring(ring, q_vector->rx)
clean_complete &= (ixgbevf_clean_rx_irq(q_vector, ring,
per_ring_budget)
< per_ring_budget);
- adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
#ifdef CONFIG_NET_RX_BUSY_POLL
ixgbevf_qv_unlock_napi(q_vector);
@@ -3553,6 +3549,24 @@ static int ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
return 0;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/* Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void ixgbevf_netpoll(struct net_device *netdev)
+{
+ struct ixgbevf_adapter *adapter = netdev_priv(netdev);
+ int i;
+
+ /* if interface is down do nothing */
+ if (test_bit(__IXGBEVF_DOWN, &adapter->state))
+ return;
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ ixgbevf_msix_clean_rings(0, adapter->q_vector[i]);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
static int ixgbevf_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
@@ -3689,6 +3703,9 @@ static const struct net_device_ops ixgbevf_netdev_ops = {
#ifdef CONFIG_NET_RX_BUSY_POLL
.ndo_busy_poll = ixgbevf_busy_poll_recv,
#endif
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = ixgbevf_netpoll,
+#endif
};
static void ixgbevf_assign_netdev_ops(struct net_device *dev)